Focus the host entry by default
window: Switch to newly created tabs
Move the Disconnect action from tab button to gears menu

It's just more logical, and preserves screen real estate.
And remove the GtkStatusBar from the terminal page
tab: Disable audible bell in terminal

Sooooo annoying.
tab: Center host key approval
prefs: Add (unimplemented) option to match system terminal

Will dive into gnome-terminal profiles later...
tab: Match theme colors for terminal

This is what the system terminal does, we should probably match it by
default.
win: Squash a compiler warning
Port to libssh

It handles GSSAPI and is already used by KDE, so it's a better choice
for us.